5 October 2006 Highly integrated planar lightwave circuits based on plasmonic and Si nano-waveguides
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Proceedings Volume 6351, Passive Components and Fiber-based Devices III; 635121 (2006) https://doi.org/10.1117/12.691140
Event: Asia-Pacific Optical Communications, 2006, Gwangju, South Korea
Abstract
Planar lightwave circuits (PLC) based on nanophotonic waveguides are becoming more and more attractive because of their ultrasmall sizes and possibility for realizing large scale monolithic integration with a very high integration density. In this paper we discuss two attractive types of nanophotonic waveguides based on dielectrics or metals. For the dielectric type, a silicon-on-insulator (SOI) strip waveguide is considered, and ultra-compact photonic integrated devices such as polarization-insensitive arrayed waveguide grating (de)multiplexers are obtained. Based on the fact that light can be confined tightly in a single interface between a metal and dielectric, a surface plasmon (SP) waveguide can offer a tight confinement for the light field. The cross-sectional size of an SP waveguide could be pushed down to tens of nanometers, i.e. beyond the diffraction limit. An accurate anaylysis for an SP waveguide formed by a dielectric nano-trench in a metal is presented. A novel subwavelength index-guided multimode plasmonic waveguide is introduced and an ultra-compact MMI power splitter is designed.
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Sailing He, Zhanghua Han, Liu Liu, Daoxin Dai, "Highly integrated planar lightwave circuits based on plasmonic and Si nano-waveguides", Proc. SPIE 6351, Passive Components and Fiber-based Devices III, 635121 (5 October 2006); doi: 10.1117/12.691140; https://doi.org/10.1117/12.691140
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